at (EN)
介词,名词

介词 “at”

at
  1. We met at the coffee shop.
  2. The meeting starts at 9 a.m.
  3. 对准(用于描述方向时)
    She pointed at the sign.
  4. 以...价格
    I bought the chair at $50.
  5. 正在进行(用于描述活动时)
    I'm at lunch, can I call you back?
  6. 处于...状态
    He's at peace now.
  7. 在...点上
    The stock is trading at $20 per share.
  8. 因为
    She was surprised at the news.
  9. 用(用于描述方式或方法时)
    She grabbed him at the collar.
  10. The car was moving at a speed of 60 miles per hour.
  11. 关于
    I'm really good at math.

名词 “at”

sg. at, pl. ats
  1. @(电子邮件地址中的“at”符号)
    My email address is jane.doe at example dot com.